GM7006 is a highly integrated single-chip digital audio system. It is built in a variety of popular audio codecs, including MP3 decoder, WMA decoder, IMA ADPCM encoder, IMA ADPCM decoder, JPEG decoder, and Motion JPEG. A high performance DSP is in charge of the decoding and encoding, and a USB 2.0 device interface is responsible for the audio and/or voice data transmission between GM7006 and the USB host. GM 7006 also includes interfaces for NAND flash, SPI, LED/LCD modules, push buttons, headphones, microphones, and FM radios.

Functional Block Diagram

System Block Diagram

Applications

• NAND flash audio players
• SD MMC card audio players

Algorithm

• IMA ADPCM for voice recording
• MPEG- 1/2/2.5 layer 1,2,3 audio decoder
• WMA v7 audio decoder
• JPEG decoder
• Motion JPEG decoder
• Bitmap and GIF decoder